I have an inground Fiberglass spa. I am having a tough time removing it. Any help would be great. I am trying not to have it hoisted out. I was thinking of cutting pieces of it out. Would that work? Any help would be great.

You certainly can cut it up to remove it, but it may have concrete under it. I would try breaking it with a hammer and checking to see what's under it before I tried to cut it with anything.
If you do cut it, be sure to use a respirator mask or a full face mask. Inhaling dust from fiberglass is dangerous.